TreeHacks 2026 Stanford, CA, USA The largest collegiate hackathon in the US. $1,030,875 in prizes Feb 14 – 15, 2026 1098 participants
Hack-Or-Treat Toronto, Canada Hack-or-Treat is a single-day hackathon where creativity, collaboration, and candy collide. Powered by MLH and Google Gemini, bring your ideas, your imagination, and a costume! Non-monetary prizes Oct 29, 2025 40 participants
Hack the Valley X Toronto, Canada Celebrating our 10th iteration of innovation, impact, and imagination as Hack the Valley X returns. Are you ready to shape the future? $CAD 2,500 in prizes Oct 3 – 5, 2025 404 participants
Hack the North 2024 Waterloo, Canada Canada's Biggest Hackathon - University of Waterloo $CAD 144,300 in prizes Sep 13 – 15, 2024 835 participants
THE FUTURE OF AI IS OPEN Online Play, build and push the boundaries of what you can do with Open Source AI, using Streamlit and Snowflake Arctic. $10,000 in prizes Winners announced 1691 participants